Fuel oil



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Patented Mar-15,1927. I I i I Q V UNITED STATES. A NT OFFII'CE.. 1

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' Fe Drawing. Application filed January 3, i922; Serial No. 526,656.

' This invention relates to fuel oils and it de red available at suchattractively low a particularly relates to that class of fuel oil pricesas to successfully compete with the which is used in internal combustionengines other fuel oils also for this reason and not for the productionof motive power, the 010- only upon the basis of superiorityjof a'high-5 ject of the invention being to produce a er mileage per unit of volumeor-weight of greater amount of energy per unit=ofweight fuel Oll. I 4 orvolume and toproduce a fuel which will Inasmuch as the lowtemperaturetar oil fill the highest requirements 'as to readiness is greatlyinclined to solidify owing to polyto ignite and'the precision withwhich'these merization, or oxidation, owing toa certain I content ofunsaturated hydrocarbons as well" J In myap lication filed-November 16,1921, as of phenols which display'the s'ame pecuunder SerialNo. 515,570,I have described a liarities' whenexpo'sed to heat or air, I supfuel oilwhich contains as chief material the ply an agent which militatesagainst this socalled low temperature tar obtainedby the solidification;such antisolidification agents 15 distillation of coal at a temperatureI have found to be the alcohols, for instance ranging froinapproximately 400-600 centiethyl alcohol. I grade, or by gasifying coalin the gas pro- For the better illustration of my invenducer having forinstance a compartment tionI cite various examples of the proporor othersuitable arrangement in which the tions in which I preferably mix thesevarious coal is gasified at a low temperature before it ingredientstogether, the parts'bei-ng onthe actually enters the partial combustionproc-- basis of volume: I I I I ess in the gas producer, to this lowtemper- EmampZe.--35 parts of low temperature ature tar beingfurthermore added an alcot 30 Parts m ph h l n t hy id 35 I hol and ahydrocarbon miscible with such pa ts f ethyl alcohol-f 1 v i 4 alcohol.As example of such a fuel oil The low temperature tar resembles someformed by substances of the kind specified What to'the Caucasian crudepetroleum as above I named a mixture of the following far as itshydrocarbon part is concerned and composition: 1 part low temperaturetar, 1, as the hydrides of the benzeneflhydrocarpart benzene, 1 part lowtemperature tar. bons occur in such Caucasian petroleum in I have nowfound out that I can substismall quantities, any such-hydride occurringtute benzene or its equivalents specified in in lowtemperature tar isnot counted in I above patent specification by naphthaleneaforesaidproportions. Whenever I speak tetrahydride which is distinguished bysevin the claims of benzene hydrocarbons I eral other merits as a fueloil which one does mean to embrace Such hydr carbons .which not findwith the various grades and kinds either have one, or several benzenerings of hydrocarbons commonly applied as a mocondensed in its molecule;

tor fuel; for instance, it develops an even [What I claim is: I Ipressure upon the piston during the com- '1. A fuel oil for thegeneration of power bustion period and as it readily ignites the inexplosion engines, consisting of lowtemutilization of thi s'hydrid'eleaves the motor -perat1iretar, an alcohol acting as'agent to ture. tarit is an excellent material to be 2. A'fuel 'oil for the generation ofpower free of an knocks; prevent the solidification of such low tem- Asnap 'thalene-tetrahydride shares this perature tar, and ofnaphthelenetetra ypleasant behavior with the low temperadride.

blended with components of a motor .fuel. in explosion engines,consisting of low tem- I'want to state though that the price of thisperature tar, ethyl alcoholand naphthalene- I hydride is almostprohibitive for most of tetrahydride. I II a 10o them at present, but inregard to'naphtha- In testimony whereof, Ihave signed my Ilenetetrahydride, which isalready now of name to this specificationthis28th day of relatively 'low price and which was first November,1921. 7 made by Graebe, Bamberger, etc., I ltnow '1 um same in the nearfuture will 'be ren- I I I FRANK n'mn'rz-

